Sound Properties & Behaviour

Is the info on compression and rarefaction correct?

• Yes

• No

Frequency is...

• how sound transferred

• wavelength of vibrations

• vibrations in different mediums

• vibrations in a second

When listening to sound of....

250Hz vs 400Hz

Which one has the higher pitch?

• 250Hz

• 400Hz

When discussing sound level, we focused more on...

• Sound Power

• Sound Intensity

• Sound Pressure

Sound above ______ dBA is considered as excessive noise by OSHA.

• 70

• 82

• 95

• 100

This image shows...

• sound becomes weaker as it propagates away from the source

• sound becomes louder when it is far away

• propagation of sound from one point source

• sound only travels in air

One of the reasons why sound in line source happens because there are multiple sound sources in a linear line.

• True

• False

This image shows the reaction of...

• Sound diffusion

• Sound absorption

• Sound reflection

• Sound transmission

This image shows the reaction of...

• Sound diffusion

• Sound absorption

• Sound reflection

• Sound transmission

This image shows the reaction of...

• Sound diffusion

• Sound absorption

• Sound reflection

• Sound transmission